Knocker is a simple, and easy to use TCP security port scanner written in C. It’s able to analyze hosts and the network services which are running on them.
Features include:
- Simple and easy to use.
- Written in C.
- Display the program output in a “no-fency” mode.
- Perform a portscan on a single port.
Website: knocker.sourceforge.io
Support:
Developer: Gabriele Giorgetti
License: GNU General Public License v2.0

Knocker is written in C. Learn C with our recommended free books and free tutorials.
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